drm/nouveau: store a pointer to vm in nouveau_cli

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --cc drivers/gpu/drm/nouveau/nouveau_bo.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/nouveau_drm.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/nouveau_drm.h
Simple merge

diff --cc drivers/gpu/drm/nouveau/nouveau_gem.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/nv84_fence.c
Simple merge